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(No Model.) 2 Sheets-Sheet l.

O. B. HARRIS. HEATING AND VENTILATING APPARATUS.

No. 436,353. Patented Sept. 16, M390.

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(N0 Model.) 2 Sheets-Sheet 2.

e. B. HARRIS. Y HEATING AND VENTILATING APPARATUS.

No. 436,353. Patented Sept. 16, 1890.

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UNITED STATES PATENT OFFICE. l

CHARLES B. HARRIS, 0F NEW YORK, N. Y.

HEATING AND VENTILATING APPARATU'S.

SPCIFICATION forming part of Letters Patent No. 436,353, dated September 16, 1890..

Application filed November 8,1889. Serial No. 329,642. (No model.)

To all whom t may concern,.-

Be it known that I, CHARLES B. HARRIS, of New York city, in the county and State of New York, have invented certain new and useful Improvements in Heating and Ventilating Apparatus, of which the followingis a specification. t

The ordinary gasstoves,which have been introduced to some extent for heating purposes, do not produce a sufficient and proper circulation of air to provide for the prompt and thorough heating of a room, and the air which supports combustion in such stoves being taken from the room reduces the vitality of the air within the room, and for these reasons such stoves have metwith a limited introduction.

In my improved apparatus the heat from the combustion of the gas is caused to insure a thorough circulation of the air within a room from one end to the other, the air passing repeatedly through the heating apparatus as it traverses the circuit provided for it. I introduce both at .the point of combustion 4as well as at a point removed therefrom air from the exterior of the building or car to support combustion and constantly revivify the atmosphere in the room. Such apparatus has been introduced to some extent; but by my invention I so arrange the valves for the admission of air and the supply of gas that they may be simultaneously operated.

In the drawings, Figure l is an interior view of a room, showing my improved heating system applied thereto. Fig. 2 is a plan view showing the heater, the cold-air box, the conmeeting-trough, and valve-operating mechanism; Fig. 3, a side View, partly in elevation and partly in section, showing the same matter.

Preferably at some point near the outer entrance-door of a church, store, theater, dwelling, room, or the like I locate a heating-box A, closed by an ordinary hot-air register, as shown. At apointremoved from the heatingbox, and preferably located at the opposite end of the room or rooms, I place a cold-air box B', also closed by an ordinary hot-air register. Into this box a pipe B admits cold or fresh air, the pipe being provided with a damper b, operated by a spindle projecting up wardly, as shown, to the register and adapted to be manipulated by an ordinary key. A trough C connects the two boxes A B.

In the box Aa gas-heater consisting of a series of perforated pipes a is shown, and the gas is turned on-and off by a vertical spindle df, projecting `upwardly to the register and adapted to be operated by an ordinary key. Where carbureted gas is employed, I mix with it atmospheric air taken from the outside of a room or building, thereby supplying the necessary oxygen to support combustion from an exterior source and avoid depletingor vitiating the interior atmosphere. This I do as follows: The fresh-air pipe C extends from the pipe B to the pipe o, which envelops the gas-pipe leading to the burner, and has also perforated projections or branches surrounding the gas-burner pipes d. I prefer, however, to so arrange that this supply of air for mixture with the gas shall be heated, and I therefore adopt the arrangement shown in Figs. 2 and 3-that is, the pipe C is carried back and forth above the burner, so that the air therein is brought to a very high temperature, and said pipe is then connected to a pipe c2, from which extend lateral pipes c enveloping the perforated gas-burner pipes. The arrangement is plain from the drawings. The air thus admitted into the pipe c mingles with the carbureted gas, thus insuring the complete combnstion of all free carbons and givinga very hot iiame. I have found that a mixture of nineteen or twenty parts of air to one of gas gives the highest heat, insures a more perfect combustion, and practically avoids the consumption of the oxygen from air in the room. By means of arod a2, running from the spindle of the gas-valve c to a damper ai in the pipe C', I am enabled by the act ot turning on the gas to Valso turn on the fresh-air supply to the burner. In order to also control from the burner the admission of air to the cold box B, I provide an additional. air-inlet D at saidbox. This inlet is provided with two dampers d and the other d. The latter is connected by a rod D with the spindle of the gas-valve c. and the damper d open, the arrangement is such that when the gas is turned on at a the damper d is thereby closed, thusinsuring the prompt heating of the room. When it is de- The damper h being closed IOO and the gas is turned o, the damper d will be opened, thus admitting cold air to the box B, and thence into the room through the two registers. Of course by closing the damperd the operation of the damper d is without effeet. If it is desired that while the gas is burning fresh air be admitted into the box B, the damper b may be opened. By such an arrangement every contingency is provided for, and I am enabled to promptly heat and cool and regulate the temperature of a room or building, at the same time maintaining a pure and agreeable atmosphere therein.

Referring to Fig. l, the arrows indicate how the atmosphere circulates ven tirely through and across the room, down into the cold box, along the trough to the heater, and so on continuously. A register :c may be provided in a room for the escape of heated air, therebyinsuring the ready entrance of the cool air from the box B to the heater and into the room.

In all cases I prefer to locate the heater at the entrance of the room or building, as I am of the opinion that when sof arranged the opening and closing of the door do not interfere with the continuous circulation of the atmosphere, as above described.

I claim as my invention- 1. The combination, substantially as set forth, of the two boxes A B, arranged in the iioor, the connecting-trough,' the gas-burner heater in one box, the fresh-air inlet D, leading into the other, the damper d', and the operating-rod D', connecting said damper with the gas-valve spindle.

2. The combination, substantially as set forth, of the two boxes arranged in the floor, the connecting-trough, the fresh-air inlets b D, leading into one box, the dampers b d d', the connecting-rod D', the gas-burner-valve spindle with which it is connected, and the gas-heater in the other box.

In testimony whereof I have hereunto subscribed my name.

CHARLES B. HARRIS.

Vitnesses:

EDWARD C. DAVIDSON, MAMIE J. KELLEY. 

